AS-i Compact DOL Starter for Decentralized Motor Control
The Siemens 3RK1322-0FS02-0AA1 is an AS-interface compact direct starter (DOL) in an IP65 enclosure, designed for decentralized motor control right at the machine — no separate control cabinet needed. It covers a setting range of 0.35 to 0.5 A, delivering 0.12 kW at 400 V in AC-3 duty, which means it handles standard three-phase squirrel-cage motors up to that power. The electromechanical switching contact and bimetal motor protection are built in, with a 24 V DC / 3 A brake contact included for holding brakes on vertical-axis drives.
IP65 — Mount It on the Machine Frame
Rated IP65, the 3RK1322-0FS02-0AA1 is sealed against dust ingress and low-pressure water jets — install it directly on the machine frame or conveyor section without an enclosure. Dimensions are 120 mm wide by 270 mm high by 190 mm deep. The main current circuit connects via tab terminals, and the 9-pole motor outgoing feeder and power connection are pre-configured for quick plug-in wiring. Two integrated inputs allow local pushbuttons or sensors to be wired without an extra I/O block.
AS-Interface Communication with Integrated Brake Control
This starter communicates over AS-interface protocol (no PROFIBUS DP), carrying control signals and diagnostics over the yellow flat cable. The built-in motor brake output switches 24 V DC at 3 A, so a holding brake is driven directly from the starter — no separate relay needed. Short-circuit protection is handled by upstream circuit-breakers; the unit itself has a breaking capacity of 50,000 A at 400 V, giving solid SCCR headroom for fault-current coordination studies.